refilling old style tank
When using the screw on tank fill adapter
Is this fitting supposed to open the tank valve so air can enter the tank, or is the valve only open when air pressure from the tank forces air into the smaller tank ?
I ask because after pressurising the fill hose to 3500 psi , no air goes into the rifles tank.
All Replies
Viewing 1 replies (of 1 total)
Viewing 1 replies (of 1 total)
- You must be logged in to reply to this topic.
No, the fitting isn’t supposed to open the valve on the tank. When the pressure in the fill line is greater than the pressure in the tank, the valve will open and allow air to enter the tank. If no air is going into the tank at 3500 psi it seems the tank must already be at 3500 psi.
How do you know no air is entering the tank if there is no gauge on it?
I have an older TalonSS where I use that adapter with a SCBA tank and JoeB valve setup. When I crack the valve on the scba tank the gauge needle rises fairly rapidly until it hits the tank pressure then moves slowly or stops til i open the valve a bit more til I get to 3000psi. That way i know what the tank pressure was at before filling. I don’t know how else you can tell that air is entering the tank.